package com.dsh.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.dsh.common.constaant.AuthServerConstant;
import com.dsh.common.exception.BizCodeEnum;
import com.dsh.common.utils.R;
import com.dsh.gulimall.auth.feign.MemberFeignSerivce;
import com.dsh.gulimall.auth.feign.ThirdPartFeignService;
import com.dsh.gulimall.auth.vo.UserLoginVo;
import com.dsh.gulimall.auth.vo.UserRegistVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.jws.Oneway;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collector;
import java.util.stream.Collectors;


@Controller
public class LoginController {


    @Autowired
    ThirdPartFeignService thirdPartFeignService;
    @Autowired
    StringRedisTemplate redisTemplate;
    @Autowired
    MemberFeignSerivce memberFeignSerivce;

    //短信验证码
    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam String phone) {
        //TODO 1.接口防刷。
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                //60内不能在发送
                return R.error(BizCodeEnum.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        // 2.验证码再次校验 redis.存key
        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code + "_" + System.currentTimeMillis();
        //redis 缓存验证码 防止内60再次发送验证码 set 相当于 setnx
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone, substring, 10, TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone, code);
        return R.ok();
    }

    /**
     * 注册
     *
     * @param vo
     * @param result
     * @param
     * @return
     */
    @PostMapping("regist")
    public String regIst(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes attributes) {
        //如果有错误回到注册页面
        if (result.hasErrors()) {
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            attributes.addFlashAttribute("errors", errors);

            //效验出错回到注册页面
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        // 真正的注册
        String code = vo.getCode();

        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码对比通过
                R r = memberFeignSerivce.regist(vo);
                if (r.getCode() == 0) {
                    //成功
                    return "redirect:/login.html";
                } else {
                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg", r.getData("msg", new TypeReference<String>() {
                    }));
                    attributes.addFlashAttribute("errors", errors);
                    //失败返回注册页
                    return "redirect:http://auth.gulimall.com/reg.html";
                }
            } else {
                Map<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                attributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        } else {
            //校验出错，转发到注册页
            Map<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            attributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }
    }


    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes) {
        //远程登录
        R login = memberFeignSerivce.login(vo);
        if (login.getCode() == 0) {
            return "redirect:http://gulimall.com/reg.html";
        } else {
            Map<String, String> errors = new HashMap<>();
            errors.put("msg", login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("error",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
